I hope this is
never necessary for a classic computer! For the DEC
and DG machines that I'm familiar with and which used a real lock
cylinder, all you have to do is remove the front panel, loosen a nut,
and pull the cylinder. It does pay to look carefully before doing this,
as when you put in the new cylinder you want the cam in the correct
position to activate the microswitches.
If it is properly designed and installed, it will NOT be removable
until after the lock is unlocked. Why have a lock that can simply be
removed instead of using the key?
But, then again, wasn't this about an IBM product?
DEC and DG just used the locks to eliminate non-operator use of
the control panel, not to eliminate non-authorized access to
the hardware. IBM locked the boxes to eliminate service types as
well as non-operator use of the controls.
bill
---
bpechter@shell.monmouth.com|pechter@pechter.dyndns.org
Three things never anger: First, the one who runs your DEC,
The one who does Field Service and the one who signs your check.